Betts Schedule 40 cast weld extended tees are designed for use on cargo tanks and satisfy a wide variety of piping needs.  These elbows are manufactured in accordance with API recommended practice 1004 with a minimum burst pressure of 4 times the MAWP per 49CFR178.345-9(b). MAWP rating is for fitting only; final MAWP is dependent on weld quality during installation.